configure: error: No support for this target/host combination.

[Yang]

Ian Lance Taylor iant-at-google.com |gcc-help| wrote:
> "Yang" <lx4r2qw02@sneakemail.com> writes:
> 
>> Yang lx4r2qw02-at-sneakemail.com |gcc-help| wrote:
>>> When building gcc 4.2.0 on my Ubuntu 7.10 x86-64, I get:
>>>   configure: error: No support for this target/host combination.
>>> I ran configure --target=i386-jos-elf. I can't really tell what was
>>> being built, but it seems like libstdc++. It would be nice to have C++
>>> support (I imagine it must exist for i386+ELF), but if this turns out
>>> to be difficult, I'd also be interested in knowing how to . Thanks in
>>> advance for any guidance.
>> To complete that second-to-last sentence: "how to disable building
>> libstdc++".
> 
> If you don't need C++, use the option --enable-languages=c when you
> run configure.
> 
> Ian

Thanks Ian. However, now I run into another build error:

/toast/pkg/gcc-i386-jos-elf/v4.2.0/1/src/gcc-4.2.0/host-x86_64-unknown-linux-gnu/gcc/xgcc 
-B/toast/pkg/gcc-i386-jos-elf/v4.2.0/1/src/gcc-4.2.0/host-x86_64-unknown-linux-gnu/gcc/ 
-B/usr/local/i386-jos-elf/bin/ -B/usr/local/i386-jos-elf/lib/ -isystem 
/usr/local/i386-jos-elf/include -isystem 
/usr/local/i386-jos-elf/sys-include -DHAVE_CONFIG_H -I. -I../.././libssp 
-I. -Wall -O2 -g -O2 -MT ssp.lo -MD -MP -MF .deps/ssp.Tpo -c 
../.././libssp/ssp.c -o ssp.o
../.././libssp/ssp.c: In function '__guard_setup':
../.././libssp/ssp.c:70: warning: implicit declaration of function 'open'
../.././libssp/ssp.c:70: error: 'O_RDONLY' undeclared (first use in this 
function)
../.././libssp/ssp.c:70: error: (Each undeclared identifier is reported 
only once
../.././libssp/ssp.c:70: error: for each function it appears in.)
../.././libssp/ssp.c:73: error: 'ssize_t' undeclared (first use in this 
function)
../.././libssp/ssp.c:73: error: expected ';' before 'size'
../.././libssp/ssp.c:75: warning: implicit declaration of function 'close'
../.././libssp/ssp.c:76: error: 'size' undeclared (first use in this 
function)
../.././libssp/ssp.c: At top level:
../.././libssp/ssp.c:89: error: expected declaration specifiers or '...' 
before 'size_t'
../.././libssp/ssp.c: In function 'fail':
../.././libssp/ssp.c:100: error: 'O_WRONLY' undeclared (first use in 
this function)
../.././libssp/ssp.c:104: error: 'size_t' undeclared (first use in this 
function)
../.././libssp/ssp.c:104: error: expected ';' before 'progname_len'
../.././libssp/ssp.c:107: error: 'progname_len' undeclared (first use in 
this function)
../.././libssp/ssp.c:107: warning: implicit declaration of function 'strlen'
../.././libssp/ssp.c:107: warning: incompatible implicit declaration of 
built-in function 'strlen'
../.././libssp/ssp.c:108: error: 'len' undeclared (first use in this 
function)
../.././libssp/ssp.c:108: error: 'msg1len' undeclared (first use in this 
function)
../.././libssp/ssp.c:109: warning: implicit declaration of function 'alloca'
../.././libssp/ssp.c:109: warning: incompatible implicit declaration of 
built-in function 'alloca'
../.././libssp/ssp.c:111: warning: implicit declaration of function 'memcpy'
../.././libssp/ssp.c:111: warning: incompatible implicit declaration of 
built-in function 'memcpy'
../.././libssp/ssp.c:119: error: 'ssize_t' undeclared (first use in this 
function)
../.././libssp/ssp.c:119: error: expected ';' before 'wrote'
../.././libssp/ssp.c:120: error: 'wrote' undeclared (first use in this 
function)
../.././libssp/ssp.c:151: warning: implicit declaration of function '_exit'
../.././libssp/ssp.c:151: warning: incompatible implicit declaration of 
built-in function '_exit'
../.././libssp/ssp.c: In function '__stack_chk_fail':
../.././libssp/ssp.c:161: warning: incompatible implicit declaration of 
built-in function 'strlen'
../.././libssp/ssp.c:161: warning: passing argument 2 of 'fail' makes 
pointer from integer without a cast
../.././libssp/ssp.c:161: error: too many arguments to function 'fail'
../.././libssp/ssp.c: In function '__chk_fail':
../.././libssp/ssp.c:168: warning: incompatible implicit declaration of 
built-in function 'strlen'
../.././libssp/ssp.c:168: warning: passing argument 2 of 'fail' makes 
pointer from integer without a cast
../.././libssp/ssp.c:168: error: too many arguments to function 'fail'
make[3]: *** [ssp.lo] Error 1
make[3]: Leaving directory 
`/toast/pkg/gcc-i386-jos-elf/v4.2.0/1/src/gcc-4.2.0/i386-jos-elf/libssp'
make[2]: *** [all] Error 2
make[2]: Leaving directory 
`/toast/pkg/gcc-i386-jos-elf/v4.2.0/1/src/gcc-4.2.0/i386-jos-elf/libssp'
make[1]: *** [all-target-libssp] Error 2
make[1]: Leaving directory 
`/toast/pkg/gcc-i386-jos-elf/v4.2.0/1/src/gcc-4.2.0'
make: *** [all] Error 2
make returned 512